cesium fluoride in N,N-dimethyl-formamide addn. of Cr complex to CsF under N2, 20°C; successive dropwise addn. of DMF and ketone via syringe; addn. of diethyl ether; reacting, 10h; filtration; washing filtrate (H2O); drying (K2SO4); evapn. to dryness; fractionated crystn. (n-hexane); elem. anal.;

cesium fluoride in N,N-dimethyl-formamide addn. of Cr complex to CsF under N2, 20°C; successive dropwise addn. of DMF and ketone via syringe; addn. of diethyl ether; reacting, 8h; filtration; washing filtrate (H2O); drying (K2SO4); evapn. to dryness; fractionated crystn. (n-hexane); elem. anal.;

cesium fluoride in N,N-dimethyl-formamide addn. of Cr complex to CsF under N2, 20°C; successive dropwise addn. of DMF and aldehyde via syringe; addn. of diethyl ether; reacting, 6h; filtration; washing filtrate (H2O); drying (K2SO4); evapn. to dryness; fractionated crystn. (n-hexane); elem. anal.;

cesium fluoride in N,N-dimethyl-formamide addn. of Cr complex to CsF under N2, 20°C; successive dropwise addn. of DMF and ketone via syringe; addn. of diethyl ether; reacting, 7h; filtration; washing filtrate (H2O); drying (K2SO4); evapn. to dryness; fractionated crystn. (n-hexane); elem. anal.;

cesium fluoride in N,N-dimethyl-formamide addn. of Cr complex to CsF under N2, 20°C; successive dropwise addn. of DMF and aldehyde via syringe; addn. of diethyl ether; reacting, 1h; filtration; washing filtrate (H2O); drying (K2SO4); evapn. to dryness; twice fractionated crystn. (n-hexane); filtration of (CO)3CrC6H6; conc. distn. at 1E-3 Torr; sublimation of residue of (CO)3CrC6H6 with slow heating to 120°C; elem. anal.;